The larva lives in a silken tube, covered with fragments of bark
and lichen on the bark of the older part of a branch. From this
tube the larva mines the basal half of a number of leaves. The larva
moults in the tube, and pupates in a side branch of it. (Bladmineerders van Europa).
Larva: The larvae of moths have a head capsule and chewing mouthparts with opposable mandibles (see video of a gracillarid larva feeding), six thoracic legs and abdominal legs (see examples).Mining larva yellow brown with black head and pronotum and exceptionally
long setae (Patocka, 1960a) (Bladmineerders van Europa).
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
The larva moults in the tube, and pupates in a side branch of it (Bladmineerders van Europa).
The adult is illustrated in UKMoths by Andrew Mitchell. The male
genitalia are illustrated by the Lepidoptera Dissection Group.
Hosts in Great Britain & Ireland:
of year - larvae:
September - May (Bladmineerders van Europa).
of year - adults: Currently unknown.
in Great Britain & Ireland: Widespread in Britain including
Bedfordshire, East Kent, East Suffolk, North Essex, North Hampshire,
North Wiltshire, Nottinghamshire, Shropshire, South Wiltshire, Staffordshire,
Surrey, West Kent, West Norfolk, West Suffolk and West Sussex (VC13) (NBN
elsewhere: Widespread in continental Europe including Austria,
Belarus, Czech Republic, Danish mainland, Estonia, Finland, French
mainland, Germany, Hungary, Italian mainland, Latvia, Lithuania,
Norwegian mainland, Poland, Romania, Russia - Central, East and
Northwest, Slovakia, Spanish mainland, Sweden, Switzerland, The
Netherlands and Ukraine (Karsholt and van Nieukerken in Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: